Hair clipper



FIG. 1 is a perspective view of a hair clipper showing my new design;

FIG. 2 is a left view thereof;

FIG. 3 is a right view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a back view thereof; and,

FIG. 7 is a front view thereof.

The broken lines shown in the figures depict portions of the hair clipper that form no part of the claimed design. 

CLAIM The ornamental design for a hair clipper, as shown and described. 